Who Would Be Interested In Doing A Collaboration Classic Hunter With Me??

Yeah, I keep it pretty scraggly in the winter. No, that's my kitchen, my girlfriend wouldn't dare come into the shop!
 
Wait, that's not Burchtree. It's Chris Elliot, or Andy Dick. Or some kind of hideous combination of Chris Elliot and Andy Dick! :D
 
1084 / 15N20 Damascus sample HT
---------------
1200 F. / 5 minutes

1450 / 5 minutes

138 F. oil quench

snap temper: 350 / 45 minutes 60 - 61 HRc

Deep cryo: 17 hours 61 - 62

Temper: 400 / 1 hour 61 - 61.5

Temper: 375 / 1 hour 61 - 61.5 HRc

What hardness do we want the actual blade to be?

RL
 
I guess we're movin! I'm going to be out of town until 27 Dec, so Dan I know you're fast and all, just tone it down a bit on my behalf okay? ;)

Dave
 
Cool Roger, I have to admit I'm surprised the RC didn't drop more. Makes me question my friend at the machine shop running the Rockwell tester.

Personally I like hunters in the 59/60 range.

Thanks for working so hard to get it right Roger :)

Nick

as per the "interupted quench" I have found it usueful for O1, but haven't done it enough with the more simple steels to see the effect. It's worth a shot though.
 
I'd vote for 58-60 range(yes, I'm aware that's a broad range) but where I like hunters and similar type blades. ANd yes, I'm aware I'm not part of this project, just butting in. :)

WOuld love a better picture of the steel, very intriguing look

lol @ steve.
 
Originally posted by ddavelarsen
I guess we're movin! I'm going to be out of town until 27 Dec, so Dan I know you're fast and all, just tone it down a bit on my behalf okay? ;)

Dave
Click to expand...

Man Dave
it's on it's way to you now :eek:

what should I do now???
:D :D
ha ha no not really,, I haven't got it yet:(
OK I'll poke along with it.
I'll send it to you next year OK:D
 
Next Year!!!

:D :p Okay Dan that'll be just fine! :p :D

You all have a great Merry Christmas, I'll be back this weekend.

Dave
 
I am glad it meets your expectations Nick. I won't do an interupted quench on this steel. I think all we need to do now is work on the temper to see what hits the hardness we want. I was thinking a low of 59 to a high of 60 but wanted your opinion too because you have the experience with this steel. I think Dan was saying 58 - 59. We ought to be close enough for all our likings.

RL
 
The edge thickness would make up my mind
I have no problem with a higher rock on a thicker blade
differential tempered
but on a thin Blade you may get chipping.
I don't think this knife will get used much but it has to be
right in all aspects anyway,,
I got to thinking this is 1084 not 1095
so with less carbon
a bit higher may be better anyway, I'd say ok at 60
as long as it's not chipping out.
keeping in mind I don't use much 1084
:)
 
Hey, that's right Edge Thickness. We didn't decide, that I recall.

Flat ground hunter? I'd like to see .010ish no more than .015.

Since this is carbon, Dave will have to leave it thick (.040+?) and I suppose it's up to me so set the final thickness. So, you knife experts, you tell me what you want.

Or is someone else grinding off the scale?

Steve
 
SCALE? what scale?
Roger you going to get scale on the blade:confused: :D

.010-.015 is purty thin for a hunter I think
(there I go again with that thinking:( :) )
but again I cut through joints and
necks with my hunters quartering deer up... :)
but I'm not doing the grind either
so I'd say it's up to you and dave..
or a good avg, of what everyone wants?
I'm thinking .020 :( to .025:) :confused:
where it's going to be flat ground.
whacha all think about it?
 
I believe Dave should definetly grind any scale/decarb. It is his grind and he should be the only one to use a belt on it.

RL
 
Okay, I did not want to say before this that I was not real happy with a certain part of the HT on the first test piece. The reason is I just had a hunch and a bad feeling about how much austenite was transformed during cryo on that last (first) one. I felt cryo should have only brought it up about 1/2 point for a simple carbon steel if it were heat treated correctly before hand. I just felt something not optimum about how I had done it. Cryo had brought it up a point or more. Too much I thought if done correctly to begin with.

All day today I wondered and I knew it was not the speed of getting into quench or the oil temperature or how quickly I got into snap temper. It had to be something with target temperature or time at target, I decided.

This evening I did another one. That leaves me only one piece left to try after this. On this one I did all the same except I increased equalize by 2 minutes (7 at 1200 F. instead of 5 min.) and increased target temperature by 25 degrees (1475 F.): equalize at 1200 for 7 min. and austenitize at 1475 (instead of 1450) for 5 minutes.

Guess what; after 350 F. snap temper / 1 hour I Rockwelled 61 - 62 HRc. That is what I got after deep cryo on the first piece. I pray deep cryo can not find much austenite to transform on this one and it looks good so far to me. The piece is in deep cryo now and has been immediately following Rockwell after snap temper.

On this one I will aim for a final HRc of about but not greater than 60 after final temper.

A NOTE: oil temp was 138 F. and I am positive I got the steel into quench in slightly less than 1 second. Another thing of interest, to me at least, this stuff is not as flat reading as rolled steel from the mill. With the nickel content of 15N20 I am amazed I only regularly get a difference of about 1 point in my Rockwell readings. On rolled steel I am used to only 1/2 point differences. Nick did well in welding this steel and what he told me about being able to read the 15N20 has turned out to be true. In short or summury, this damascus is giving me a difference of about 1 point in Rockwell value from various areas of the test pieces. That seems highly credible to me since I know from trying over and over again that I can not at all Rockwell a Thunderforged damascus sample because of its solitary nickel content.

RL
 
Nick's Damascus Test Piece #2
--------------------
Normalize:
----------
Ramp rate: 2400 F. per hr.
Soak foil wrapped at 1400 F. / 2 minutes
Still air cool
Remove from foil

Austenitize:
------------
Equalize: 1200 F. / 7 min.
Austenitize: 1475 F. / 5 min.
Oil quench: 137 F. oil
Snap temper: 350 F. / 1 hr.
Deep cryo: 13 hr.
Temper: 450 F. / 1 hr.
Temper: 430 F. / 1 hr.
----------------------

Rockwell:
---------
After snap temper: 61 - 62 HRc
After deep cryo: 62.5 - 63
After temper: 59.5 - 60
After final temper: 59 - 60 HRc

BREAK PICTURE IS HERE: http://riflestocks.tripod.com/nick_steel.html

RL
 
hey hey
I got a blade blank today
Roger how thick are the ends of the Ivory going to be rouphly?
I need to know how thick the bolsters are going to be
to set the depth of the holes for the screw heads?

also can we set the screw holes seen as pins in the profile picture
a little farther apart? mainly the back one back a little?

collaboration-damascus-2.JPG
 
You must log in or register to reply here.
Back
Top